Frank rhind



(No Model.)

P. RHIND.

ARGAND LAMP BURNER.

Patented July 23, 1889.

\A/limsis 3 tributer.

U ITED STATES PATENT OFFICE.

FRANK RHIND, OF MERIDEN, CONNECTICUT, ASSIGNOR OF ONE-HALF TO CHARLES UPTON, OF NEW YORK, N. Y.

ARGAND LAM P-BURN ER.

SPECIFICATION forming part of Letters Patent No. 407,492, dated July 23, 1889.

Application filed J 11116 27, 1887. Serial No. 242,569. (No model.)

To all whom it may concern:

Be it known that I, FRANK RHIND, acitizen of the United States, residing at Meriden, county of New Haven, and State of Connecti- 5 cut, have invented anew and useful Improvement in Argand Lamp-Burners, of which the following is a specification.

My invention relates to that class of burners which have a tubular wick, and is intended [O to simplify and cheapen such burners, and at the same time to improve their light-giving qualities.

In the accompanying drawings, Figure 1 represents in vertical section a burner embodying my improvements. Fig. 2 is a horizontal section in outline through the line a: :10 in Fig. 1. Fig. 3 shows in perspective a detached portion of the burner. Fig. 4 isaplan view of the blank from which the portion shown in Fig. 3 is made.

Similar letters refer to similarparts in the several views.

A designates the inner and B the outer wick-tube of a burner.

2 5 In the example of my invention shown in the drawings the construction and operation of the inner air-distributer are as follows:

D is the lower and D the upper shell of the body or skirt of the burner. One or both of 0 these shells are perforated to admit air through the ports 0 to the interior of the flame.

G is the conical portion, and H the buttonshaped upper portion,of a perforated air-dish is a circular projection from the upper disk of such air-distributer. I is a cylindrical perforated tube within the air-distributer.

My invention is constructed and operated 0 as follows: C H is an inner air-distributer, such as is shown and claimed in a patent granted to me December 29, 1885, and numbered 333,338, and need not be here described. The cylindrical tube I is formed from perfo- 5 rated sheet metal, and is of a size to pass snugly through the upper end of the conefrustum G and fit in the recess h on the under side of the disk which forms the top of the air-distributor. This tube I is open at its lower end within the cone-frustum G, and

closed at its upper "end by the disk H, so that all the air which impinges against the upper edge of the flame passes through the perforations in the upper end of the tube I, as well as through those in the button-shaped distributer H. The result is a flame with a. smooth even upper edge.

September 29, 1886, I made application for a patent on a burner resembling in general construction the one here shown and desoribed,which application has received Serial No. 222,125. I therefore disclaim anything described or claimed therein.

In the various forms of construction shown in the above-named application the inner perforated portion is shown as secured at its lower end to the outer foraminous portion or air-distributer proper, so that all the air supplied to the inner surface of the flame is drawn through two foraminous shells. It is sometimes advantageous, in order to secure a 1 larger supply of air at the base of the flame, to suspend the inner perforated portion from above, so that, a portion of the air is permitted to impinge upon the base of the flame after passing through one foraminous shell only. I believe the suspension of an inner foraminous shell from the top or cap of a perforated airdistributer to be new, and as many different forms of air-distributers are well known in 8c the art, I do not Wish to be limited to the particular shape of either inner perforated shell or air-distributer, or to the mode of supporting the inner shell here shown.

What I claim as my present invention, and desire to secure by Letters Patent of the United States, is as follows:

1. In an Argand burner, the combination of a foraminous inner air-distributer and a foraminous shell within said distributer, the 0 lower end of said shell being of a diameter less than that of said distributer, so as to leave an annular opening between said shell and said distributer, substantially as described.

2. In an Argand burner, the combination of a foraminous inner air-distributer and a concentric foraminous portion of substantially cylindric form within said distributer, said concentric portion being of a less diameter than the lower end of said distributer, and so as to leave an annular opening between said concentric portion and said distributer, substantially as described.

3. In an Argand burner, the combination of a foraminous inner air-distributer provided with an iinperforate top and a concentric foraininous portion of substantially eylindric form within said distributer, the lower end of said concentric portion open, its upper end closed by said cap, said concentric portion being of less diameter than said distributer, and so as to leave an annular opening between the lower end of said concentric portion and said distributor, substantially as described.

4. In an Argand burner, the combination of an inner air-distributor consisting of a foraininous cone-frustum surmounted by a foraminous button-shaped portion covered by an imperforate cap and a foraminous openended cylinder within said distributor, the upper end of said cylinder being closed by said cap, the lower end of less diameter than said distributer, and so as to leave an annular opening between said cylinder and said distributor, substantially as described.

FRANK RIIIND.

Witnesses:

S. J ROBY, GEO. L. COOIER. 

